pregnant?¿

so me and my bf had sex about 2 weeks ago maybe and he finished in me the second time we did it so like we had sex he came and then we did it again and he came again and thats when it was left in me im on bc so i wasnt too worried about pregnancy, today i went to the bathroom and wiped and i had brownish kindve discharge my period isnt until 6 days and im cramping so could be implantation or just early period?

ps i understand unprotected sex can lead to pregnancy even if youre on bc. we both want kids maybe not exactly right now we talked about in a few months but if it happens it happens and we’ll both be happy about it this isnt one of those “oh i had unprotected sex could i be pregnant” because ik theres a possibility i just want to know what the discharge is